QgsExpressionContextScope* QgsExpressionContextUtils::projectScope()
{
QgsProject* project = QgsProject::instance();
QgsExpressionContextScope* scope = new QgsExpressionContextScope( QObject::tr( "Project" ) );
const QgsStringMap vars = QgsProject::instance()->variables();
QgsStringMap::const_iterator it = vars.constBegin();
for ( ; it != vars.constEnd(); ++it )
{
scope->setVariable( it.key(), it.value() );
}
//add other known project variables
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_title" ), project->title(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_path" ), project->fileInfo().filePath(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_folder" ), project->fileInfo().dir().path(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_filename" ), project->fileInfo().fileName(), true ) );
QgsCoordinateReferenceSystem projectCrs = project->crs();
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_crs" ), projectCrs.authid(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_crs_definition" ), projectCrs.toProj4(), true ) );
scope->addFunction( QStringLiteral( "project_color" ), new GetNamedProjectColor() );
return scope;
}
QStringList QgsServerProjectUtils::wmsOutputCrsList( const QgsProject &project )
{
QStringList crsList;
QStringList wmsCrsList = project.readListEntry( QStringLiteral( "WMSCrsList" ), QStringLiteral( "/" ), QStringList() );
if ( !wmsCrsList.isEmpty() )
{
for ( int i = 0; i < wmsCrsList.size(); ++i )
{
QString crs = wmsCrsList.at( i );
if ( !crs.isEmpty() )
{
crsList.append( crs );
}
}
}
if ( crsList.isEmpty() )
{
QStringList valueList = project.readListEntry( QStringLiteral( "WMSEpsgList" ), QStringLiteral( "/" ), QStringList() );
bool conversionOk;
for ( int i = 0; i < valueList.size(); ++i )
{
int epsgNr = valueList.at( i ).toInt( &conversionOk );
if ( conversionOk )
{
crsList.append( QStringLiteral( "EPSG:%1" ).arg( epsgNr ) );
}
}
}
if ( crsList.isEmpty() )
{
//no CRS restriction defined in the project. Provide project CRS, wgs84 and pseudo mercator
QString projectCrsId = project.crs().authid();
crsList.append( projectCrsId );
if ( projectCrsId.compare( QLatin1String( "EPSG:4326" ), Qt::CaseInsensitive ) != 0 )
{
crsList.append( QStringLiteral( "EPSG:%1" ).arg( 4326 ) );
}
if ( projectCrsId.compare( QLatin1String( "EPSG:3857" ), Qt::CaseInsensitive ) != 0 )
{
crsList.append( QStringLiteral( "EPSG:%1" ).arg( 3857 ) );
}
}
return crsList;
}
